Alarm-clock.



G. KERN.

ALARM GLOOK.

APPLICATION FILED SEPT. 27. 1909.

Patented May 24, 1910.

2 SHEETS-SHEET 1.

INVENTOR &

ATTORNEY G. KERN.

ALARM CLOCK. APPLIOATION FILED SEPT. 27, 1909.

958,930. Patented May 24, 1910.

2 SHEETS-SHEET 2.

STA'rES PATENT OFFICE.

GEORGE. KERN, OF PERU, ILLINOIS, ASSIGNOR TO THE WESTERN CLOCK MANUFAC- TUBING COMPANY, OF LA SALLE, ILLINOIS, A CORPORATION OF ILLINOIS.-

ALARM-CLOCK.

-' Application filed September 27, 1909. Serial No. 519.808.

T 0 all whom it may concern: I

Be it known that'LGnonon- KERN, a subject of the Emperor of Germany,residing at Peru, in the county of Lasalle, State of Illinois, in the United States, have invented theclock, and for locking and releasing the alarm escape wheel directly; and has for its object the production of 'analarm mechanism having fewer parts, and which isextremely reliable, thereby producing an alarm clock of the class described which will keep accurate time and be very inexpensive to construct.

In the drawingsFigure 1. is an enlarged front view of a clock movement, partly cut away, showing my invention. Fig. 2. is a section at right angles to Fig. 1, along a line through the shaft 21. Fig. 3. is a top vie of .a'clock movement with my invention showin the position of the repeating and manipu ating lever when said lever is held out of engagement with the repeating wheel by thetime movement. Fig. 4. is a top view of a clock movement with my invention, showing theposition of the repeating and manipulating lever when it is in engagement with the repeating wheel.

In the drawings, 1 represents the front plate and 2 the back plate of a movement Mounted between these using my invention. plates on the shafts shown are the time main wheel 3, the center wheel 4, the third wheel 5, the fourth wheel 6, which form a part, of the time train, and the alarm main wheel 7 .with the alarm main spring indicated at 10, the intermediate wheel 8, and the alarm escape wheel 9, which comprises the alarm train of any ordinary alarm clock.

Mounted on a shaft 12 and engaging with the teeth of escape wheel 9 is the hammer verge 11. The hammer verge 11 has an arm 13 which ispivotally connected to one end of a link 14. The other end ,of link 14 is pivotally connected to the'hammer lever 15,

Specification of Letters Patent. 7 Patented NIay I,

one of whose ends is journaled on a,p in"l 6 fastened in the plat'esl .The other endof y 0 ,l T. said lever 10 earries the hammer 17. Projecting from the hammer; vergell, is'a stop 11 lever 18 of the shapeshownfwhos'e function will be described below. 1

Engaging nvith the te th f 9 is a projection 29 from aspring 19, which i escape wheel projection29, whenv it enters betweenthe teeth of said alarm escape wheel, locks 'it' against rotation, and when drawn out of the path of said teeth, permits the said wheel to rotate and hence to sound' the' alarm.

Through apertures in said spring 19 and the movement plates 1 and 2, passes the handset arbor 21 having. a cam with a projectin finger 22 fastened to it. Between sai.

spring 19 andsa'id cam with finger 22, mountedthe trip wheel 23 which carries the. i

trip cam 24 on which said projecting finger 22 rides and causes said tr1p Wheel23 and spring 19 to move away from and toward,"

the movement plate, and the end of said spring to move out of and into the path of teeth of said alarm escape wheel 9.

Mounted on the shaft of the third wheel is a repeating wheel 25 whose teeth engage with the side projection or pin 31 of a' repeating :lever 26. Said lever 26 is fastened on a shaft 27 journaled in the plates 1' and 2. The end of said repeating lever 26 has a side projection or pin 31 which engages the teeth of the repeating wheel 25 and a projection '28 near its upper end which engages and locks the stop lever 18 against further motion when said lever 26 is in the position shown in solid lines in Fig. 1, having its lower projection 31 between the teeth of the repeating wheel 25. As repeating wheel 25 rotates, the projection 31 rides one of the teeth and the lever 26 moves toward (but does not reach) the dotted position shown in Fig. 1. and releases the stop lever 18 so it is free to vibrate toward its dotted position shown in Fig. 1. When the lever is in the position shown in solid lines and as just described, the clock is'a repeating alarm clock. The

alarm releasing spring 19 above mentioned also has another projection 39 which has an inclined face which engages said repeating lever 26 and forces its lower end projection out of engagementwith the teeth of the repeating wheel 25 whenever said spring 19 is late as above deing 'wl ee .25. whenever :moved away i 26 is again brought-into its previous posi-.

tion of-en agement with the teeth of repentthe sprin 19 is from the front plate. be time movement accomplishes this of itself, for asj the trip wheel 23 is rotated by the train of the said time movement, the finger 22 presses the trip cam 24: and spring toward the plate as above described, and the time train is.

free from the drag of repeating lever 26,

which is held in engagement-with the re peating .wheel 25 by means of a spring 32 which is fastened tothe plate 1' at 40 and to sition shown in I which are actuated by the time mechanism.

' ted lines in Fig. 1 by means the repeating lever 26 projects. Concentric-- ally to and slidabl mounted over the aperture on said case s a member .35 having a handle 38, which member is iastened to said case by means of rivets my previous alarm clock by this improveexpensive-to make.

iivpa'ssing through a 30 slot 37 in member 35. enmember is in its extreme right position .as shown in Fig. 1, the clock is a re eating' alarm clock as above described, an when member 35 is in :its extreme left position (bringing the lever '26 to the position shown in the dotted lines in Fig. 1) the clock is a long alarm clock.

From the above description it is evident that I have simplified the .constructionof 40 ment, as at leastone of the parts has'been eliminated, thus producing an alarm clock which is more easily constructed and less In an alarm clock, the combination of a time movement and an alarm mechanism, an alarm escape wheel journaled in said alarm mechanism, means actuated by said "time movement for locking said alarm escape wheel, said means comprising a spring, and projection on said spring which. enters the path of the teeth of alarm escape wheel.

GEORGE KERN. -Witnse's i" WIDLIAM A. RADTKE,

' QSOAR W. Dammit. 

